Do Lab Grown Diamonds Have Inclusions?

The world of diamonds is as fascinating as it is complex, with both lab-grown and natural diamonds captivating the interest of jewelers and enthusiasts alike. A common question that arises is whether lab-grown diamonds, known for their technological creation process, possess inclusions similar to their natural counterparts. This blog delves into the heart of this inquiry, providing nuanced insights into the nature of inclusions in lab-grown diamonds.

Understanding Inclusions

Inclusions are internal characteristics that occur in diamonds. They are essentially natural imperfections that can range from minuscule internal dots to more noticeable internal features. In natural diamonds, inclusions are formed over billions of years under extreme heat and pressure conditions within the Earth's crust.

The Genesis of Lab-Grown Diamonds

Lab-grown diamonds are created through two primary methods: High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD). Both processes aim to replicate the natural conditions that produce diamonds, albeit on a significantly accelerated timeline.

Inclusions in Lab-Grown Diamonds

Presence of Inclusions

Yes, lab-grown diamonds can have inclusions. Despite the controlled environment of their creation, the processes involved in growing diamonds in a lab can introduce imperfections.

Types of Inclusions

  • HPHT Diamonds- These might contain metallic inclusions due to the catalysts used in the process.
  • CVD Diamonds- Inclusions in CVD diamonds can include pinpoints and black spots, sometimes resulting from the gases used in their creation.

Comparing Inclusions in Lab-Grown and Natural Diamonds

While both lab-grown and natural diamonds can have inclusions, the types and frequencies of these imperfections can differ due to their distinct formation processes. The controlled conditions of lab-grown diamond production often lead to fewer and different types of inclusions compared to those found in natural diamonds.

Impact of Inclusions on Quality and Value


The presence of inclusions affects the clarity grade of a diamond, whether lab-grown or natural. Diamonds with fewer and less noticeable inclusions are considered of higher clarity and quality.


Inclusions can impact the value of a diamond. In general, diamonds (including lab-grown) with fewer inclusions command higher prices.

Grading and Certification

Lab-grown diamonds are graded and certified using the same criteria as natural diamonds, including an assessment of their inclusions. Reputable gemological laboratories provide detailed reports on the clarity, noting the presence and characteristics of any inclusions.

Choosing Between Lab-Grown and Natural Diamonds

When deciding between a lab-grown and a natural diamond, it's essential to consider personal preferences, including how you value the origin and creation process of the diamond, as well as the importance of inclusions in your decision-making process.


Lab-grown diamonds, like their natural counterparts, can possess inclusions, with the type and prevalence varying based on the method of creation. Understanding the nature of these inclusions is crucial for anyone considering a lab-grown diamond, ensuring that your choice aligns with your expectations for clarity, quality, and value. As with any diamond purchase, thorough research and consideration of certified grading reports can guide you to the perfect diamond that meets your specific criteria and desires.

Visit us in-store for a personalized consultation, or call our Beaumont or Mid County location to learn more about our offerings. Let Mathews Jewelers, with our AGS Certified diamonds and commitment to customer satisfaction, be your guide to finding the perfect diamond that will be cherished for a lifetime.

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